As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED RT FUEL CAP DOOR OPENED IN FLIGHT AND FUEL CAP CAME OFF AFTER BANGING UP UNDERNEATH WING WHILE ATTACHED TO CHAIN. FUEL CAP SEPARATED FROM ACFT IN FLIGHT. MAINTENANCE INSPECTED, REPLACED FUEL/DEFUEL CAP AND PERFORMED CHECKS IAW AMM. ACFT RELEASED FOR SERVICE.